Artist's conception of the Mississippian culture Cahokia Mounds Site in Illinois, directly across the Mississippi River from modern St. Louis.

The area that would become St. Louis was a center of the Native AmericanMississippian culture, which built numerous temple and residential earthworkmounds on both sides of the Mississippi River. Their major regional center was at Cahokia Mounds, active from 900 to 1500. Due to numerous major earthworks within St. Louis boundaries, the city was nicknamed as the "Mound City". These mounds were mostly demolished during the city's development. Historic Native American tribes in the area included the Siouan-speaking Osage people, whose territory extended west, and the Illiniwek.

In early 1764, after France lost the 7 Years' War, Pierre Laclède and his stepson Auguste Chouteau founded what was to become the city of St. Louis.[15] (French lands east of the Mississippi had been ceded to Great Britain and the lands west of the Mississippi to Spain; France and Spain were 18th-century allies and both were Catholic nations.) The early French families built the city's economy on the fur trade with the Osage, as well as with more distant tribes along the Missouri River. The Chouteau brothers gained a monopoly from Spain on the fur trade with Santa Fe. French colonists used African slaves as domestic servants and workers in the city.

France, alarmed that Britain would demand French possessions west of the Mississippi and the Missouri River basin after the losing New France to them in 1759–60, transferred these to Spain as part of the Viceroyalty of New Spain. These areas remained in Spanish possession until 1803. In 1780 during the American Revolutionary War, St. Louis was attacked by British forces, mostly Native American allies, in the Battle of St. Louis.[16]

A map of St. Louis, Illinois in 1780. From the archives in Seville, Spain

The founding of St. Louis began in 1763. Pierre Laclede led an expedition to set up a fur-trading post farther up the Mississippi River. Before then, Laclede had been a very successful merchant. For this reason, he and his trading partner Gilbert Antoine de St. Maxent were offered monopolies for six years of the fur trading in that area.

Although they were originally only granted rights to set-up a trading post, Laclede and other members of his expedition quickly set up a settlement. Some historians believe that Laclede's determination to create this settlement was the result of his affair with a married woman Marie-Thérèse Bourgeois Chouteau in New Orleans.

Laclede on his initial expedition was accompanied by his young stepson, Auguste Chouteau. Some historians still debate which of the two men was the true founder of St. Louis. The reason for this lingering question is that all the documentation of the founding was loaned and subsequently destroyed in a fire.

In 1780 during the American Revolutionary War, St. Louis was attacked by British forces, mostly Native American allies, in the Battle of St. Louis.

For the first few years of St. Louis's existence, the city was not recognized by any of the governments. Although originally thought to be under the control of the Spanish government, no one asserted any authority over the settlement, and thus St. Louis had no local government. This led Laclede to assume a position of civil control, and all problems were disposed in public settings, such as communal meetings. In addition, Laclede granted new settlers lots in town and the surrounding countryside. In hindsight, many of these original settlers thought of these first few years as "the golden age of St. Louis".[citation needed]

By 1765, the city began receiving visits from representatives of the English, French, and Spanish governments. The Indians in the area expressed dissatisfaction at being under the control of British forces. One of the great Ottawa chieftains, Pontiac, was angered by the change of power and the potential for the British to come into their lands. He desired to fight against them but many of the St. Louis inhabitants refused.

St. Louis was transferred to the French First Republic in 1800 (although all of the colonial lands continued to be administered by Spanish officials), then sold by the French to the U.S. in 1803 as part of the Louisiana Purchase. St. Louis became the capital of, and gateway to, the new territory. Shortly after the official transfer of authority was made, the Lewis and Clark Expedition was commissioned by President Thomas Jefferson. The expedition departed from St. Louis in May 1804 along the Missouri River to explore the vast territory. There were hopes of finding a water route to the Pacific Ocean, but the party had to go overland in the Upper West. They reached the Pacific Ocean via the Columbia River in summer 1805. They returned, reaching St. Louis on September 23, 1806. Both Lewis and Clark lived in St. Louis after the expedition. Many other explorers, settlers, and trappers (such as Ashley's Hundred) would later take a similar route to the West.

The city elected its first municipal legislators (called trustees) in 1808. Steamboats first arrived in St. Louis in 1818, improving connections with New Orleans and eastern markets. Missouri was admitted as a state in 1821. St. Louis was incorporated as a city in 1822, and continued to develop largely due to its busy port and trade connections. Slaves worked in many jobs on the waterfront as well as on the riverboats. Given the city's location close to the free state of Illinois and others, some slaves escaped to freedom. Others, especially women with children, sued in court in freedom suits, and several prominent local attorneys aided slaves in these suits. About half the slaves achieved freedom in hundreds of suits before the American Civil War.

Immigrants from Ireland and Germany arrived in St. Louis in significant numbers starting in the 1840s, and the population of St. Louis grew from less than 20,000 in 1840, to 77,860 in 1850, to more than 160,000 by 1860. By the mid-1800s, St. Louis had a greater population than New Orleans.

After the war, St. Louis profited via trade with the West, aided by the 1874 completion of the Eads Bridge, named for its design engineer. Industrial developments on both banks of the river were linked by the bridge, the first in the mid-west over the Mississippi River. The bridge connects St. Louis, Missouri to East St. Louis, Illinois. The Eads Bridge became an iconic image of the city of St. Louis, from the time of its erection until 1965 when the Gateway Arch Bridge was constructed. The bridge crosses the St. Louis riverfront between Laclede's Landing, to the north, and the grounds of the Gateway Arch, to the south. Today the road deck has been restored, allowing vehicular and pedestrian traffic to cross the river. The St. Louis MetroLink light rail system has used the rail deck since 1993. An estimated 8,500 vehicles pass through it daily.

After the Civil War, social and racial discrimination in housing and employment were common in St. Louis. In 1916, during the Jim Crow Era, St. Louis passed a residential segregation ordinance[19] saying that if 75% of the residents of a neighborhood were of a certain race, no one from a different race was allowed to move in.[20] That ordinance was struck down in a court challenge by the NAACP[21], so racists invented racial covenants, which prevented the sale of houses in certain neighborhoods to “persons not of Caucasian race”. Again, St. Louisans offered a lawsuit in challenge, and covenants were ruled unconstitutional in 1948 in the Shelley v. Kraemer Supreme Court case.[22]

In the first half of the 20th century, St. Louis was a destination in the Great Migration of African Americans from the rural South seeking better opportunities. During World War II, the NAACP campaigned to integrate war factories. In 1964, civil rights activists protested at the construction of the Gateway Arch to publicize their effort to gain entry for African Americans into the skilled trade unions, where they were underrepresented. The Department of Justice filed the first suit against the unions under the Civil Rights Act of 1964.

In the first part of the century, St. Louis had some of the worst air pollution in the United States. In April 1940, the city banned the use of soft coal mined in nearby states. The city hired inspectors to ensure only hard anthracite was burned. By 1946, the city had reduced air pollution by about three-quarters.[23]

View of the Arch (completed 1965) from Laclede's Landing, the only remaining section of St. Louis's commercial riverfront.

De jure educational segregation continued into the 1950s, and de facto segregation continued into the 1970s, leading to a court challenge and interdistrict desegregation agreement. Students have been bused mostly from the city to county school districts to have opportunities for integrated classes, although the city has created magnet schools to attract students.[24]

St. Louis, like many Midwestern cities, expanded in the early 20th century due to industrialization, which provided jobs to new generations of immigrants and migrants from the South. It reached its peak population of 856,796 at the 1950 census.[25] Suburbanization from the 1950s through the 1990s dramatically reduced the city's population, as did restructuring of industry and loss of jobs. The effects of suburbanization were exacerbated by the relatively small geographical size of St. Louis due to its earlier decision to become an independent city, and it lost much of its tax base. During the 19th and 20th century, most major cities aggressively annexed surrounding areas as residential development occurred away from the central city; however, St. Louis was unable to do so.

Several urban renewal projects were built in the 1950s, as the city worked to replace old and substandard housing. Some of these were poorly designed and resulted in problems. One prominent example, Pruitt-Igoe, became a symbol of failure in public housing, and was torn down less than two decades after it was built.

In the 21st century, the city of St. Louis contains only 11% of the total metropolitan population. (The top 20 U.S. metro areas have an average of 24% of their populations in their central cities. St. Louis grew slightly during the early 2000s, but lost population from 2000 to 2010. Immigration has continued, with the city attracting Vietnamese, Latin Americans predominantly from Mexico, and Bosnians, which comprises the largest Bosnian community outside of Bosnia.

On December 20, 2011, a 24-year-old African American man, Anthony Lamar Smith, from St. Louis, Missouri, was shot and killed by a St. Louis police officer. When the police officer was found not guilty in September 2017, several protests erupted.

Dedicated in 1914, it is the mother church of the Archdiocese of St. Louis and the seat of its archbishop. The church is known for its large mosaic installation (which is one of the largest in the Western Hemisphere with 41.5 million pieces), burial crypts, and its outdoor sculpture.

Founded in 1963, it includes a science museum and a planetarium, and is situated in Forest Park. Admission is free. It is one of only two science centers in the United States which offers free general admission.

Founded in 1880, the St. Louis Symphony Orchestra is the second-oldest symphony orchestra in the United States, preceded only by the New York Philharmonic. Its principal concert venue is Powell Symphony Hall.

Built in 1888, it was the city's main passenger intercity train terminal. Once the world's largest and busiest train station, it was converted in the early 1980s into a hotel, shopping center, and entertainment complex. Today, it also continues to serve local rail (MetroLink) transit passengers, with Amtrak service nearby.

Some notable post-modern commercial skyscrapers were built downtown in the 1970s and 1980s, including the One US Bank Plaza (1976), the AT&T Center (1986), and One Metropolitan Square (1989), which is the tallest building in St. Louis. One US Bank Plaza, the local headquarters for US Bancorp, was constructed for the Mercantile Bancorporation in the Structural expressionist style, emphasizing the steel structure of the building.

Several examples of religious structures are extant from the pre-Civil War period, and most reflect the common residential styles of the time. Among the earliest is the Basilica of St. Louis, King of France (locally referred to as the Old Cathedral). The Basilica was built between 1831 and 1834 in the Federal style. Other religious buildings from the period include SS. Cyril and Methodius Church (1857) in the Romanesque Revival style and Christ Church Cathedral (completed in 1867, designed in 1859) in the Gothic Revival style.

Only a few civic buildings were constructed during the early 19th century. The original St. Louis courthouse was built in 1826 and featured a Federal style stone facade with a rounded portico. However, this courthouse was replaced during renovation and expansion of the building in the 1850s. The Old St. Louis County Courthouse (locally known as the Old Courthouse) was completed in 1864 and was notable for having an early cast iron dome and for being the tallest structure in Missouri until 1894. Finally, a customs house was constructed in the Greek Revival style in 1852, but was demolished and replaced in 1873 by the U.S. Customhouse and Post Office.

Because much of the city's early commercial and industrial development was centered along the riverfront, many pre-Civil War buildings were demolished during construction of the Gateway Arch. The city's remaining architectural heritage of the era includes a multi-block district of cobblestone streets and brick and cast-iron warehouses called Laclede's Landing. Now popular for its restaurants and nightclubs, the district is located north of Gateway Arch along the riverfront. Other industrial buildings from the era include some portions of the Anheuser-Busch Brewery, which date to the early 1860s.

The city is divided into 79 government-designated neighborhoods.[30] The neighborhood divisions have no legal standing, although some neighborhood associations administer grants or hold veto power over historic-district development.

Several neighborhoods are lumped together in categories such as "North City", "South City", and "The Central West End".

According to the United States Census Bureau, St. Louis has a total area of 66 square miles (170 km2), of which 62 square miles (160 km2) is land and 4.1 square miles (11 km2) (6.2%) is water.[31] (Not shown on simple maps of the city, the land at its airport is owned by the city, served by its fire department and others, and is an exclave of St. Louis.) The city is built primarily on bluffs and terraces that rise 100–200 feet above the western banks of the Mississippi River, in the Midwestern United States just south of the Missouri-Mississippi confluence. Much of the area is a fertile and gently rolling prairie that features low hills and broad, shallow valleys. Both the Mississippi River and the Missouri River have cut large valleys with wide flood plains.

Limestone and dolomite of the Mississippianepoch underlie the area, and parts of the city are karst in nature. This is particularly true of the area south of downtown, which has numerous sinkholes and caves. Most of the caves in the city have been sealed, but many springs are visible along the riverfront. Coal, brick clay, and millerite ore were once mined in the city. The predominant surface rock, known as St. Louis limestone, is used as dimension stone and rubble for construction.

Near the southern boundary of the city of St. Louis (separating it from St. Louis County) is the River des Peres, practically the only river or stream within the city limits that is not entirely underground.[32] Most of River des Peres was confined to a channel or put underground in the 1920s and early 1930s. The lower section of the river was the site of some of the worst flooding of the Great Flood of 1993.

The city's eastern boundary is the Mississippi River, which separates Missouri from Illinois. The Missouri River forms the northern line of St. Louis County, except for a few areas where the river has changed its course. The Meramec River forms most of its southern line.

The urban area of St. Louis has a damp subtropical climate (Köppen: Cfa); however, its metropolitan region even to the south may present a hot-summer humid continental climate (Dfa), which shows the effect of the urban heat island in the city. Without the presence of water bodies its winters may be colder than Boston, but its summers may be more similar to those of Lubbock, Texas than other areas to the east.[33] The city experiences hot, humid summers, and chilly to cold winters. It is subject to both cold Arctic air and hot, humid tropical air from the Gulf of Mexico. The average annual temperature recorded at nearby Lambert–St. Louis International Airport, is 57.1 °F (13.9 °C). Both 100 and 0 °F (38 and −18 °C) temperatures can be seen on an average 2 or 3 days per year.[34] Average annual precipitation is about 41.0 inches (1,040 mm),[34] but annual precipitation has ranged from 20.59 in (523 mm) in 1953 to 61.24 in (1,555 mm) in 2015.[35]

St. Louis experiences thunderstorms 48 days a year on average.[36] Especially in the spring, these storms can often be severe, with high winds, large hail and tornadoes. Lying within the hotbed of Tornado Alley, St. Louis is one of the most frequently tornadic metropolitan areas in the U.S. and has an extensive history of particularly damaging tornadoes. Severe flooding, such as the Great Flood of 1993, may occur in spring and summer; the (often rapid) melting of thick snow cover upstream on the Missouri or Mississippi Rivers can contribute to springtime flooding.

Most of the residential areas of the city are planted with large native shade trees. The largest native forest area is found in Forest Park. In autumn, the changing color of the trees is notable. Most species here are typical of the eastern woodland, although numerous decorative non-native species are found. The most notable invasive species is Japanese honeysuckle, which officials are trying to manage because of its damage to native trees. It is removed from some parks.

Winter populations of bald eagles are found along the Mississippi River around the Chain of Rocks Bridge. The city is on the Mississippi Flyway, used by migrating birds, and has a large variety of small bird species, common to the eastern US. The Eurasian tree sparrow, an introduced species, is limited in North America to the counties surrounding St. Louis. The city has special sites for birdwatching of migratory species, including Tower Grove Park.

Frogs are commonly found in the springtime, especially after extensive wet periods. Common species include the American toad and species of chorus frogs commonly called spring peepers, which are found in nearly every pond. Some years have outbreaks of cicadas or ladybugs. Mosquitoes, no-see-ums, and houseflies are common insect nuisances, especially in July and August; because of this, windows are nearly universally fitted with screens. Invasive populations of honeybees have sharply declined in recent years. Numerous native species of pollinator insects have recovered to fill their ecological niche, and armadillos have been regularly seen throughout the St. Louis area, especially since 2005.[40]

Map of racial distribution in St. Louis, 2010 U.S. Census. Each dot is 25 people: White, Black, Asian, Hispanic or Other (yellow)

Pruitt–Igoe was a large housing project constructed in 1954, which became infamous for poverty, crime and segregation. It was demolished in 1972.

St. Louis grew slowly until the American Civil War, when industrialization and immigration sparked a boom. Mid-19th century immigrants included many Irish and Germans; later there were immigrants from southern and eastern Europe. In the early 20th century, African American and white migrants came from the South; the former as part of the Great Migration out of rural areas of the Deep South. Many came from Mississippi and Arkansas.

After years of immigration, migration, and expansion, the city reached its peak population in 1950. That year, the Census Bureau reported St. Louis's population as 82% White and 17.9% African American.[46] After World War II, St. Louis began losing population to the suburbs, first because of increased demand for new housing, unhappiness with city services, ease of commuting by highways, and later, white flight.[47] St. Louis's population decline has resulted in a significant increase of abandoned residential housing units and vacant lots throughout the city proper; this blight has attracted much wildlife (such as deer and coyotes) to the many abandoned overgrown lots.

St. Louis has lost 64.0% of its population since the 1950 United States Census, the highest percent of any city that had a population of 100,000 or more at the time of the 1950 Census. Detroit, Michigan, and Youngstown, Ohio, are the only other cities that have had population declines of at least 60% in the same time frame. The population of the city of St. Louis has been in decline since the 1950 census; during this period the population of the St. Louis Metropolitan Area, which includes more than one county, has grown every year and continues to do so. A big factor in the decline has been the rapid increase in suburbanization.

According to the 2010 United States Census, St. Louis had 319,294 people living in 142,057 households, of which 67,488 households were families. The population density was 5,158.2 people per square mile (1,990.6/km²). About 24% of the population was 19 or younger, 9% were 20 to 24, 31% were 25 to 44, 25% were 45 to 64, and 11% were 65 or older. The median age was about 34 years.

The population was about 49.2% African American, 43.9% White (42.2% Non-Hispanic White), 2.9% Asian, 0.3% Native American/Alaska Native, and 2.4% reporting two or more races. Hispanic or Latino of any race were 3.5% of the population.[48]

The African-American population is concentrated in the north side of the city (the area north of Delmar Boulevard is 94.0% black, compared with 35.0% in the central corridor and 26.0% in the south side of St. Louis[49]). Among the Asian-American population in the city, the largest ethnic group is Vietnamese (0.9%), followed by Chinese (0.6%) and Indians (0.5%). The Vietnamese community has concentrated in the Dutchtown neighborhood of south St. Louis; Chinese are concentrated in the Central West End.[50] People of Mexican descent are the largest Latino group, and make up 2.2% of St. Louis's population. They have the highest concentration in the Dutchtown, Benton Park West (Cherokee Street), and Gravois Park neighborhoods.[48] People of Italian descent are mainly concentrated in The Hill.

In 2000, the median income for a household in the city was $29,156, and the median income for a family was $32,585. Males had a median income of $31,106; females, $26,987. Per capita income was $18,108.

Some 19% of the city's housing units were vacant, and slightly less than half of these were vacant structures not for sale or rent.

In 2010, St. Louis's per-capita rates of online charitable donations and volunteerism were among the highest among major U.S. cities.[51]

As of 2010[update], 91.05% (270,934) of St. Louis city residents age 5 and older spoke English at home as a primary language, while 2.86% (8,516) spoke Spanish, 0.91% (2,713) Serbo-Croat, 0.74% (2,200) Vietnamese, 0.50% (1,495) African languages, 0.50% (1,481) Chinese, and French was spoken as a main language by 0.45% (1,341) of the population over the age of five. In total, 8.95% (26,628) of St. Louis's population age 5 and older spoke a mother language other than English.[52]

About 15 families from Bosnia settled in St. Louis between 1960 and 1970. After the Bosnian War started in 1992, more Bosnian refugees began arriving and by 2000, tens of thousands of Bosnian refugees settled in St. Louis with the help of Catholic aid societies. Many of them were professionals and skilled workers who had to take any job opportunity to be able to support their families. Most Bosnian refugees are Muslim, ethnically Bosniaks (87%); they have settled primarily in south St. Louis and South County. Bosnian-Americans are well integrated into the city, developing many businesses and ethnic/cultural organizations.[58]

An estimated 70,000 Bosnians live in the metro area, the largest population of Bosnians in the United States and the largest Bosnian population outside their homeland. The highest concentration of Bosnians is in the neighborhood of Bevo Mill and in Affton, Mehlville, and Oakville of south St. Louis County.[59]

According to stltoday.com in 2016 GDP of the St. Louis metro area was $160 billion and in 2015 GDP was $155 billion. 2014 Gross Metropolitan Product (GMP) of St. Louis was $145.958 billion up from $144.03 in 2013, $138.403 in 2012 and $133.1 in 2011 making it the 21st-highest in the country. The St. Louis Metropolitan Area had a Per capita GDP of $48,738 in 2014 up 1.6% from 2013.[60] This signals the growth of the St. Louis economy. According to the 2007 Economic Census, manufacturing in the city conducted nearly $11 billion in business, followed by the health care and social service industry with $3.5 billion, professional or technical services with $3.1 billion, and the retail trade with $2.5 billion. The health care sector was the biggest employer in the area with 34,000 workers, followed by administrative and support jobs, 24,000; manufacturing, 21,000, and food service, 20,000.[61]

Boeing employs nearly 15,000 people in its north St. Louis campus, headquarters to its defense unit. In 2013, the company said it would move about 600 jobs from Seattle, where labor costs have risen, to a new IT center in St. Louis.[75][76] Other companies, such as LaunchCode and LockerDome, see the city's potential to become the next major tech hub.[77] Programs such as Arch Grants are attracting new startups to the region.[78]

The St. Louis Public Schools (SLPS) operate more than 75 schools, attended by more than 25,000 students, including several magnet schools. SLPS operates under provisional accreditation from the state of Missouri and is under the governance of a state-appointed school board called the Special Administrative Board, although a local board continues to exist without legal authority over the district. Since 2000, charter schools have operated in the city of St. Louis using authorization from Missouri state law. These schools are sponsored by local institutions or corporations and take in students from kindergarten through high school.[82] In addition, several private schools exist in the city, and the Archdiocese of St. Louis operates dozens of parochial schools in the city, including parochial high schools. The city also has several private high schools, including secular, Catholic and Lutheran schools. St. Louis University High School – a Jesuit preparatory high school founded in 1818 – is the oldest secondary educational institution in the U.S. west of the Mississippi River.[83]

With its French past and waves of Catholic immigrants in the 19th and 20th centuries, from Ireland, Germany and Italy, St. Louis is a major center of Roman Catholicism in the United States. St. Louis also boasts the largest Ethical Culture Society in the United States, and consistently ranks as one of the most generous cities in the United States, ranking ninth in 2013.[84] Several places of worship in the city are noteworthy, such as the Cathedral Basilica of St. Louis, home of the world's largest mosaic installation.[85]

The city is defined by music and the performing arts, especially its association with blues, jazz, and ragtime. St. Louis is home to the St. Louis Symphony, the second-oldest symphony orchestra in the United States, which has toured nationally and internationally to strong reviews. Until 2010, it was also home to KFUO-FM, one of the oldest classical music FM radio stations west of the Mississippi River.[86]Opera Theatre of Saint Louis has been called "one of America's best summer festivals" by the Washington Post. One notable feature of former general director Timothy O'Leary's St. Louis tenure was his ability to draw the community into discussions of challenging operas. John Adams's "The Death of Klinghoffer", which became a lightning rod of controversy when it came to the Metropolitan Opera in 2014, had no such problems in St. Louis three years before, because the company instigated a citywide discussion, with interfaith dialogues addressing the tough issues of terrorism, religion and the nature of evil that the opera brings up. Instead of protesting the opera, St. Louis's Jewish Community Relations Council gave O'Leary an award. Under O'Leary, the company — always known for innovative work — has given second chances to other major American operas, such as John Corigliano's "The Ghosts of Versailles", presented in 2009 in a smaller-scale version.[87]

The Gateway Arch marks downtown St. Louis and a historic center that includes the Federal courthouse where the Dred Scott case was first argued, a newly renovated and expanded public library, major churches and businesses, and retail. An increasing downtown residential population has taken to adapted office buildings and other historic structures. In nearby University City is the Delmar Loop, ranked by the American Planning Association as a "great American street" for its variety of shops and restaurants, and the Tivoli Theater, all within walking distance.

Also unique to St. Louis are St. Louis style pizza (extremely thin crust, Provel cheese, and cut in small squares, marketed by one leading purveyor as "The Square Beyond Compare")[88] and the Ted Drewes "Concrete", which is frozen custard blended with any combination of dozens of ingredients, served in a large yellow cup with a spoon and straw. The mixture is so thick that a spoon inserted into the custard does not fall if the cup is inverted.[89]

The city of St. Louis has a strong mayor-council government with legislative authority and oversight vested in the Board of Aldermen of the City of St. Louis and with executive authority in the Mayor of St. Louis and six other separately elected officials.[93] The Board of Aldermen is made up of 28 members (one elected from each of the city's wards) plus a board president who is elected citywide.[94]
The 2014 fiscal year budget topped $1 billion for the first time, a 1.9% increase over the $985.2 million budget in 2013.[95] 238,253 registered voters lived in the city in 2012,[96] down from 239,247 in 2010, and 257,442 in 2008.[97]

The mayor is the chief executive officer of the city and is responsible for appointing city department heads including; the director of public safety, the director of streets & traffic, the director of health, the director of human services, the director of the airport, the director of parks & recreation, the director of workforce development, the director of the Community Development Agency, the director of economic development, the director of public utilities, the director of the Civil Rights Enforcement Agency, the register, and the assessor, among other department-level or senior administrative positions.

Municipal elections in St. Louis are held in odd-numbered years, with the primary elections in March and the general election in April. The mayor is elected in odd-numbered years following the United States presidential election, as are the aldermen representing odd-numbered wards. The president of the board of aldermen and the aldermen from even-numbered wards are elected in the off-years. The Democratic Party has dominated St. Louis city politics for decades. The city has not had a Republican mayor since 1949, and the last time a Republican was elected to another citywide office was in the 1970s. As of 2015[update], all 28 of the city's aldermen are Democrats.[99]

Forty-six individuals have held the office of mayor of St. Louis, four of whom—William Carr Lane, John Fletcher Darby, John Wimer, and John How—served non-consecutive terms. The most terms served by a mayor was by Lane, who served 8 full terms plus the unexpired term of Darby. The current mayor is Lyda Krewson, who took office April 18, 2017, and is the first woman to hold the post. She succeeded Francis Slay, who retired in 2017 after serving 16 years and six days from April 11, 2001, to April 17, 2017 – longer than anyone in the city's history. The second-longest-serving mayor was Henry Kiel, who took office April 15, 1913, and left office April 21, 1925, a total of 12 years and 9 days over three terms in office. Two others – Raymond Tucker, and Vincent C. Schoemehl – also served three terms as mayor, but served seven fewer days. The shortest-serving mayor was Arthur Barret, who died 11 days after taking office.

Although St. Louis separated from St. Louis County in 1876, some mechanisms have been put in place for joint funding management and funding of regional assets. The St. Louis Zoo-Museum district collects property taxes from residents of both St. Louis City and County and the funds are used to support cultural institutions including the St. Louis Zoo, Saint Louis Art Museum and the Missouri Botanical Gardens. Similarly, the Metropolitan Sewer District provides sanitary and storm sewer service to the city and much of St. Louis County. The Bi-State Development Agency (now known as Metro) runs the region's MetroLink light rail system and bus system.

St. Louis is split between 11 districts in the Missouri House of Representatives: all of the 76th, 77th, 78th, 79th, 80th, 81st, 82nd, and 84th, and parts of the 66th, 83rd, and 93rd, which are shared with St. Louis County.[101] The 5th Missouri Senate district is entirely within the city, while the 4th is shared with St. Louis County.[101]

At the federal level, St. Louis is the heart of Missouri's 1st congressional district, which also includes part of northern St. Louis County.[101] A Republican has not represented a significant portion of St. Louis in the U.S. House since 1953. Correspondingly, despite primarily voting Republican prior to 1928 in presidential elections, from then on the city has become a Democratic stronghold at the presidential level. George H.W. Bush in 1988 was the most recent Republican to win even a quarter of the city's votes in a presidential election.

The Military Personnel Records Center (NPRC-MPR) located at 9700 Page Avenue in St. Louis, is a branch of the National Personnel Records Center and is the repository of over 56 million military personnel records and medical records pertaining to retired, discharged, and deceased veterans of the U.S. armed forces.[103]

The city of St. Louis has, as of April 2017[update], the highest murder rate, per capita, in the United States,[104] with 188 homicides in 2015 (59.3 homicides per 100,000)[105][106] and ranks No. 13 of the most dangerous cities in the world by homicide rate. Detroit, Flint, Memphis, Oakland, and some smaller cities with fewer than 100,000 population (ex. Camden) have higher overall violent crime rates than St. Louis, when comparing other crimes such as rape, robbery, and aggravated assault.[105] St. Louis index crime rates have declined almost every year since the peak in 1993 (16,648), to the 2014 level of 7,931 (which is the sum of violent crimes and property crimes) per 100,000. In 2015, the index crime rate reversed the 2005–2014 decline to a level of 8,204. Between 2005 and 2014, violent crime has declined by 20%, although rates of violent crime remains 6 times higher than the United States national average and property crime in the city remains 2 ​1⁄2 times the national average.[107] St. Louis has a significantly higher homicide rate than the rest of the U.S. for both whites and blacks and a higher proportion committed by males. As of October 2016[update], 7 of the homicide suspects were white, 95 black, 0 Hispanic, 0 Asian and only 1 female out of the 102 suspects. In 2016, St. Louis was the most dangerous city in the United States with populations of 100,000 or more, ranking 1st in violent crime and 2nd in property crime. It was also ranked 6th of the most dangerous of all establishments in the United States, and East St. Louis, a suburb of the city itself, was ranked 1st.[108][109] The St. Louis Police Department at the end of 2016 reported a total of 188 murders for the year, the same number of homicides that had occurred in the city in 2015.[110] According to the STLP At the end of 2017, St. Louis had 205 murders but the city only recorded 159 inside St. Louis city limits.[111][112] The new Chief of Police, John Hayden said two-thirds (67%) of all the murders and one-half of all the assaults are concentrated in a triangular area in the North part of the city.[111]

Four interstate highways connect the city to a larger regional highway system. Interstate 70, an east-west highway, runs roughly from the northwest corner of the city to downtown St. Louis. The north-south Interstate 55 enters the city at the south near the Carondelet neighborhood and runs toward the center of the city, and both Interstate 64 and Interstate 44 enter the city on the west, running parallel to the east. Two of the four interstates (Interstates 55 and 64) merge south of Gateway Arch National Park and leave the city on the Poplar Street Bridge into Illinois, while Interstate 44 terminates at Interstate 70 at its new interchange near N Broadway and Cass Ave. A small portion of the Interstate 270 outer belt freeway runs through the northern end of the city.

Major roadways include the north-south Memorial Drive, located on the western edge of Gateway Arch National Park and parallel to Interstate 70, the north-south streets of Grand Boulevard and Jefferson Avenue, both of which run the length of the city, and Gravois Road, which runs from the southeastern portion of the city to downtown and used to be signed as U.S. Route 66. An east-west roadway that connects the city with surrounding communities is Martin Luther King, Jr. Drive, which carries traffic from the western edge of the city to downtown.

The St. Louis metro area is served by Metrolink (known as Metro) and is the 11th-largest light rail system in the country with 46 mi (74 km) of double tracklight rail. The Red Line and The Blue Line both serve all the stations in the inner city, and branch to different destinations beyond in the suburban areas. Both lines enter the city north of Forest Park on the western edge of the city or on the Eads Bridge in downtown St. Louis to Illinois. All of the system track is in independent right of way, with both surface level and underground subway track in the city. All stations are independent entry, while all platforms are flush-level with trains. Rail service is provided by the Bi-State Development Agency (also known as Metro), which is funded by a sales taxes levied in the city and other counties in the region.[117] The Gateway Multimodal Transportation Center acts as the hub station in the city of St. Louis, linking the city's light rail system, local bus system, passenger rail service, and national bus service. It is located just east of the historic grand St. Louis Union Station.

St. Louis is served by two passenger airports. St. Louis Lambert International Airport, owned and operated by the City of St. Louis, is 11 miles northwest of downtown along highway I-70 between I-170 and I-270 in St. Louis County. It is the largest and busiest airport in the state. In 2016, when the airport had more than 255 daily departures to about 90 domestic and international locations, it served more than 15 million passengers.[118] The airport serves as a focus hub city for Southwest Airlines; it was once a hub for Trans World Airlines and a focus-city for American Airlines and AmericanConnection.[118] The airport has two terminals with a total of five concourses. International flights and passengers use Terminal 2, whose lower level holds the Immigration and Customs gates. Passengers can move between the terminals on complimentary buses that run continuously, or via MetroLink for a fee. It was possible to walk between the terminals until Concourse D was closed in 2008.[119]

River transportation is available through the Port of St. Louis, which is 19.3 miles of riverbank on the Mississippi River that handles more than 32 million tons of freight annually. The Port is the second-largest inland port by trip-ton miles, and the third-largest by tonnage in the United States, with more than 100 docks for barges and 16 public terminals on the river.[120] The Port Authority added two new small fire and rescue craft in 2012 and 2013.

Taxicab service in the city is provided by private companies regulated by the Metropolitan Taxicab Commission. Rates vary by vehicle type, size, passengers and distance, and by regulation all taxicab fares must be calculated using a taximeter and be payable in cash or credit card.[126] Solicitation by a driver is prohibited, although a taxicab may be hailed on the street or at a stand.

^Mean monthly maxima and minima (i.e. the highest and lowest temperature readings during an entire month or year) calculated based on data at said location from 1981 to 2010.

^Official records for St. Louis were kept at the Weather Bureau Office from January 1874 to December 1892, Eads Bridge from January 1893 to December 1929, and at Lambert–St. Louis Int'l since January 1930.[37]

^Primm, James (1981). Lion of the Valley: St. Louis, Missouri, 1764-1980. Missouri Historical Society Press. ISBN1-883982-24-3. James Primm points out that the 1870 census results were modified in order to make St. Louis appear more populated than Chicago, a nearby economic competitor

Columbia, Missouri

Columbia is a city in the U.S. state of Missouri. It is the county seat of Boone County and home to the University of Missouri. Founded in 1821, it is the principal city of the five-county Columbia metropolitan area. It is Missouri's fourth most-populous and fastest growing city, with an estimated 123,180 residents in 2018.

Kansas City, Missouri

Kansas City is the largest city in the U.S. state of Missouri. According to the U.S. Census Bureau, the city had an estimated population of 488,943 in 2017, making it the 37th most-populous city in the United States. It is the central city of the Kansas City metropolitan area, which straddles the Kansas–Missouri state line. Kansas City was founded in the 1830s as a Missouri River port at its confluence with the Kansas River coming in from the west. On June 1, 1850 the town of Kansas was incorporated; shortly after came the establishment of the Kansas Territory. Confusion between the two ensued and the name Kansas City was assigned to distinguish them soon after.

Missouri

Missouri is a state in the Midwestern United States. With over six million residents, it is the 18th-most populous state of the Union. The largest urban areas are St. Louis, Kansas City, Springfield, and Columbia; the capital is Jefferson City. The state is the 21st-most extensive in area. In the South are the Ozarks, a forested highland, providing timber, minerals, and recreation. The Missouri River, after which the state is named, flows through the center of the state into the Mississippi River, which makes up Missouri's eastern border.

Gateway Arch National Park

Gateway Arch National Park, formerly known as the Jefferson National Expansion Memorial until 2018, is an American national park located in St. Louis, Missouri, near the starting point of the Lewis and Clark Expedition. The Gateway Arch and its immediate surroundings were initially designated as a national memorial by executive order on December 21, 1935, and redesignated as a national park in 2018. The park is maintained by the National Park Service (NPS).

Alton, Illinois

Alton is a city on the Mississippi River in Madison County, Illinois, United States, about 15 miles (24 km) north of St. Louis, Missouri. The population was 27,865 at the 2010 census. It is a part of the Metro-East region of the Greater St. Louis metropolitan area. It is famous for its limestone bluffs along the river north of the city, for its role preceding and during the American Civil War, and as the home town of jazz musician Miles Davis and Robert Wadlow, the tallest known person in history. It was the site of the last Abraham Lincoln and Stephen Douglas debate in October 1858. The former state penitentiary in Alton was used during the Civil War to hold up to 12,000 Confederate prisoners of war.

Granite City, Illinois

Granite City is a city in Madison County, Illinois, United States, within the Greater St. Louis metropolitan area. The population was 29,849 at the 2010 census, making it the second-largest city in the Metro East and Southern Illinois regions, behind Belleville. Officially founded in 1896, Granite City was named by the Niedringhaus brothers, William and Frederick, who established it as a steel making company town for the manufacture of kitchen utensils made to resemble granite.

East St. Louis, Illinois

East St. Louis is a city mainly in St. Clair and with a small portion in Madison counties in southwestern Illinois, United States. It is located across the Mississippi River from St. Louis, Missouri, in what is defined as the Metro-East region of Southern Illinois. Once a bustling industrial center, like many cities in the Rust Belt, East St. Louis has been severely affected by loss of jobs due to industrial restructuring during the second half of the 20th century. In 1950, East St. Louis was the fourth-largest city in Illinois when its population peaked at 82,366. As of the 2010 census, the city had a population of 27,006, less than one-third of the 1950 census.

Kirkwood, Missouri

Kirkwood is an inner-ring western suburb of St. Louis located in St. Louis County, Missouri, United States. As of the 2010 census, the city's population was 27,540. Founded in 1853, the city is named after James P. Kirkwood, builder of the Pacific Railroad through that town. It was the first planned suburb located west of the Mississippi River.

Eads Bridge

Eads Bridge is a combined road and railway bridge over the Mississippi River connecting the cities of St. Louis, Missouri and East St. Louis, Illinois. It is located on the St. Louis riverfront between Laclede's Landing, to the north, and the grounds of the Gateway Arch, to the south. The bridge is named for its designer and builder, James Buchanan Eads.

Greater St. Louis

Greater St. Louis is a bi-state metropolitan area that completely surrounds and includes the independent city of St. Louis. It includes parts of both the U.S. states of Missouri and Illinois. The city core is on the Mississippi Riverfront on the border with Illinois in the geographic center of the metro area. The Mississippi River bisects the metro area in half geographically between Illinois and Missouri; however, the Missouri half is much more populous. St. Louis is the largest metro area in Missouri and the second largest in Illinois. St. Louis County is independent of the City of St. Louis and their two populations are generally tabulated separately.

MetroLink (St. Louis)

MetroLink is the light rail transit system in the Greater St. Louis area of Missouri and the Metro East area of Illinois. The system consists of two lines connecting Lambert-St. Louis International Airport and Shrewsbury, Missouri with Scott Air Force Base near Shiloh, Illinois through downtown St. Louis. The system features 38 stations and carries an average of 53,123 people each weekday. As of the first quarter of 2015, it is second only to Minneapolis Metro Transit's Blue and Green lines in the Midwestern United States in terms of ridership, and is the 11th-largest light rail system in the country.

Metro East

Metro East is a region in Illinois that comprises the eastern suburbs of St. Louis, Missouri, United States. It encompasses five Southern Illinois counties in the St. Louis Metropolitan Statistical Area. The region's most populated city is Belleville, with 45,000 residents. The Metro East is the second largest urban area in Illinois after the Chicago metropolitan area and, as of the 2000 census, the population of the Metro East statistical area is 599,845 residents, a figure that has risen above 700,000 in 2010. The significant growth in the Metro East is mainly due to people in smaller outlying towns in Illinois moving to the area for better economic/job opportunities.

Metro Transit (St. Louis)

Metro Transit is an enterprise of Bi-State Development, an interstate compact formed by Missouri and Illinois in 1949. Its operating budget in 2016 was $280 million, which is funded by sales taxes from the City of St. Louis and St. Louis County, the St. Clair County Illinois Transit District, federal and state grants and subsidies, and through fare paying passengers.

Union Station (St. Louis)

St. Louis Union Station, a National Historic Landmark, was a passenger intercity train terminal in St. Louis, Missouri. Once the world's largest and busiest train station, it was converted in the early 1980s into a hotel, shopping center, and entertainment complex. Today, an adjacent station serves light-rail passengers on MetroLink's Red and Blue Lines, while the city's intercity train station sits a quarter-mile to the east.

Transportation in St. Louis

Transportation in St. Louis, Missouri includes road, rail, ship, and air transportation modes connecting the city of St. Louis with surrounding communities in Greater St. Louis, national transportation networks, and international locations. The city of St. Louis also supports a public transportation network that includes bus and light rail service.

Downtown St. Louis

Downtown St. Louis is the central business district of St. Louis, Missouri, the hub of tourism and entertainment, and the anchor of the St. Louis metropolitan area. The downtown is bounded by Cole Street to the north, the river front to the east, Chouteau Avenue to the south, and Tucker Boulevard to the west. The downtown is the site of many corporate headquarters, including Stifel Financial Corp., HOK, Spire Inc., and a host of other companies.

Iconography of St. Louis

The Iconography of St. Louis, Missouri is strongly informed by the city's French and German heritages, physical features, and place in American history.